Linux Kernel up to 6.11.10/6.12.1 sound_kunit.c kunit_kzalloc null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.11.10/6.12.1. It has been rated as critical. Affected is the function kunit_kzalloc of the file sound_kunit.c. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2024-56696. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.11.10/6.12.1. This affects the function kunit_kzalloc of the file sound_kunit.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ALSA: core: Fix possible NULL dereference caused by kunit_kzalloc() kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL check may lead to NULL dereference. Add NULL checks for all the kunit_kzalloc() in sound_kunit.c

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-56696 since 12/27/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 216493 (Ubuntu 24.10 : Linux kernel vulnerabilities (USN-7276-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.11.11 or 6.12.2 eliminates this vulnerability. Applying the patch f5486bf8abfe778b368d8fd1aa655dc01d0013ca/8bfff486ecc79a72e9380e2d5e0ff234d5542d2f/9ad467a2b2716d4ed12f003b041aa6c776a13ff5 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (216493) and CERT Bund (WID-SEC-2024-3762). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • Dell NetWorker
  • Dell Avamar
  • Red Hat OpenShift
  • IBM QRadar SIEM
  • Dell PowerProtect Data Domain
  • Open Source Linux Kernel
  • IBM DataPower Gateway
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216493
Nessus Name: Ubuntu 24.10 : Linux kernel vulnerabilities (USN-7276-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.11.11/6.12.2
Patch: f5486bf8abfe778b368d8fd1aa655dc01d0013ca/8bfff486ecc79a72e9380e2d5e0ff234d5542d2f/9ad467a2b2716d4ed12f003b041aa6c776a13ff5

Timelineinfo

12/27/2024 🔍
12/28/2024 +1 days 🔍
12/28/2024 +0 days 🔍
02/13/2026 +412 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-56696 (🔍)
GCVE (CVE): GCVE-0-2024-56696
GCVE (VulDB): GCVE-100-289695
CERT Bund: WID-SEC-2024-3762 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/28/2024 12:50
Updated: 02/13/2026 08:52
Changes: 12/28/2024 12:50 (59), 02/20/2025 03:30 (2), 02/13/2026 08:52 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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